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Percent Calculations
Inputting a value and with a percent (%) sign makes the value a percent. The percent (%)
sign uses the value immediately before it as the argument, which is simply divided by 100 to
get the percentage value.
A
Percent Calculation Examples
Example 1: 2 % = 0.02 (
2
1 0 0
)
2
!
(
(%)
w
Example 2: 150 × 20% = 30 (150 ×
20
1 0 0
)
150*20
!
(
(%)
w
Example 3: What percent of 880 is 660?
660/880
!
(
(%)
w
Example 4: Increase 2,500 by 15%.
2500+2500*
15
!
(
(%)
w
Example 5: Reduce 3,500 by 25%.
3500-3500*
25
!
(
(%)
w
Example 6: Reduce the sum of 168, 98, and 734 by 20%.
168+98+734
w
-
G
*20
!
(
(%)
w
Example 7: If 300 grams are added to a test sample originally weighing 500 grams, what is
the percentage increase in weight?
(500+300)
/500
!
(
(%)
w
2%
002
2%
002
150
×
20%
30
150
×
20%
30
660
÷
880%
75
660
÷
880%
75
2500
+
2500
×
15%
2875
2500
+
2500
×
15%
2875
3500
–
3500
×
25%
2625
3500
–
3500
×
25%
2625
168
+
98
+
734
1000
168
+
98
+
734
1000
Ans
–
Ans
×
20%
800
Ans
–
Ans
×
20%
800
(
500
+
300
)
÷
500%
160
(
500
+
300
)
÷
500%
160